The Enterprise plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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−17° on Nov. 16, 1955, the coldest reading for this week of the year since 1903. Next is −12° in 1978.
Enterprise’s center stands about 4,970 ft above sea level. Within three miles the land runs from 4,880 ft to 7,220 ft, a difference of 2,340 ft: mountain country. The highest named summit within 15 miles is Thurston Peak, about 9,650 ft, 6 miles west-southwest.
Under the town center the state geologic map shows Alluvium and colluvium (unconsolidated), from the Quaternary, less than 2.6 million years old.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Conglomerate, mixed-clastic. Age: Late Cretaceous to Early Eocene, 48 to 100 million years old. About 6 mi of the line.
Andesite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 5 mi of the line.
Metamorphic. Age: Neoarchean to Paleoproterozoic, 1.6 to 2.8 billion years old. About 5 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 2 mi of the line.
Clay. Age: Pleistocene, less than 2.6 million years old. About 2 mi of the line.
Carbonate, shale. Age: Middle Cambrian, 497 to 521 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 5 smaller units along the line are not listed.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Enterprise reaches Great Salt Lake by way of the Weber: about 45 river miles. Great Salt Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Enterprise; river miles along the main stem, rounded.
Enterprise has a dry-summer hot-summer continental climate. Summer afternoons average 92° in July; winter nights fall to about 14° in January. A normal year brings about 55 inches of snow; with the rain, that comes to about 17 inches of water.
On November 14 Enterprise normally reaches 50° and falls to 23°. The record high is 70°, in 1999; the record low −6°, in 1945. The most rain on this date, 1.11 in, fell in 2006.
Normals 1991–2020 and records since 1903 at Morgan, 6 miles southeast, 100 ft higher. NOAA, through RCC-ACIS.
